Every few months they force you to upload new builds that use the latest "api level" .. This change makes zero difference to how the app functions.
Its a massive pain updating them and I have let several apps lapse and be taken down cus I couldnt be bothered jumping though googles arbitrary hoops.
Which I guess is google's aim, and also that they are doing this to clear as much space as they can and save a small amount of money on storage, as part of their general enshittification process.